JPH07109690B2 - Disk file device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention uses a large number of discs, which are record carriers, to file information of a main capacity such as document information, video information, and audio information, and has a large capacity. The present invention relates to a disc file device capable of selectively pulling out a large number of discs at high speed so that the information can be read out at high speed and supplying the information to a player for writing and / or reading information.

[Conventional technology]

The disk file device of the prior invention (Japanese Patent Application No. 59-116211) filed earlier by the applicant of the present invention will be described with reference to FIGS.

First, as shown in FIG. 4 and FIG. 5, a disk (not shown) as a record carrier is housed inside the cartridge 1, and the cartridge 1 is thin (upper and lower thickness). It is formed into a substantially rectangular shape.

The stocker 2 is vertically long and has a vertical shape. A large number of horizontal storage shelves 3 are provided in a vertical direction (vertical direction) in parallel with each other. It is configured so that it can be stored in parallel in a horizontal state in a large number of storage shelves 3.

The two players 4 and 5 are for writing and reading information on the disc in each cartridge 1, and are arranged vertically adjacent to the lower position (or upper position) of the stocker 2.

The carrier 6 selectively withdraws the cartridge 1 from the stocker 2 in the horizontal direction of the arrow X and then transfers it in the vertical direction of the arrow Y to transfer the cartridge 1 to both players.
The carrier 6 is selectively supplied to the players 4 and 5, and the carrier 6 is configured to move along the front sides of the stocker 2 and the players 4 and 5. The carrier transfer means 7 for moving the carrier 6 is composed of, for example, a pair of left and right vertical timing belts 8. When the timing belts 8 are rotated by a motor 9, the carrier 6 is left and right vertically. It is configured to be vertically moved at a high speed in the arrow Y direction while being horizontally guided by a guide rail (not shown).

Next, as shown in FIG. 6, in the carrier 6, a reversing plate 12 is horizontally arranged in a frame 11 having a substantially U shape.
A frame 12 is pivotally supported by a frame 11 on a horizontal axis of rotation 13 so that the frame 12 can be rotated 180 degrees. The cartridge 1 that is pulled out from the storage rack 3 in the horizontal direction of the arrow X is configured to be retained in the reversal plate 12 in the horizontal state. The reversing plate 12 is driven by a motor 14 for rotating a rotating shaft 13 so that an arrow Z is formed around a horizontal center of rotation O.
It is configured to be inverted 180 ° in the direction, and by inverting this inversion plate 12 by 180 °, the upper and lower surfaces of the cartridge are formed.
The A and B planes will be inverted. The cartridge 1 is transferred between the reversing plate 12 and the storage shelves 3 and the players 4 and 5 in the direction of the arrow X, which is a horizontal direction, by a cartridge transfer means (not shown) provided on the reversing plate 12. Is configured to be done.

According to this disc file device, as shown in FIGS. 4 and 5, the cartridge 1 in the designated storage shelf 3 among the plurality of storage shelves 3 is pulled out in the direction of the arrow X and the reversal plate of the carrier 6 is pulled out. After holding it at 12, the carrier 6 is moved to the designated one player (for example, 4) in the direction of the arrow Y, and the transferred cartridge 1 is supplied to the one player from the direction of the arrow X to read the information on the disc. Write. Then, while reading or writing the information, first, the carrier 1 is moved to the other player (for example, 5) in the arrow Y direction, and the cartridge 1 which has been used by the other player is moved to the arrow X. After being pulled out in the direction and held by the reversing plate 12 of the carrier 6, the carrier 6 is moved in the direction of the arrow Y to the storage shelf 3 where the cartridge 1 should be returned, and the transferred cartridge 1 is stored in the original storage shelf 3. It is sent in the direction of arrow X and stored. Next, by repeating the above operation, after pulling out the next cartridge 1 from the designated storage rack 3 by the carrier 6, the cartridge is transferred to the other player and supplied,
The preparations for reading and writing the information of the disk to be performed next are completed.

On the other hand, in this disc file device, when the cartridge 1 pulled out from the stocker 2 is supplied to the players 4 and 5 by the inversion function of the A and B surfaces of the cartridge 1 by the inversion plate 12 described in FIG. Depending on the cartridge 1
By reversing and supplying the A and B surfaces, information can be read and written on both upper and lower recording surfaces of the disk in the cartridge 1.

[Problems to be solved by the invention]

However, when reversing the A and B surfaces of the cartridge 1 by the reversing plate 12, for example, after the solid lines shown in FIGS. 4 and 5,
The carrier 6 is positioned in front of the uppermost storage rack 3 of the stocker 2, the cartridge 1 is pulled out from the storage rack 3 and held by the reversing plate 12, and then the reversing plate 12 is set on the spot as indicated by the one-dot chain line. If you try to invert 180 degrees around the horizontal axis of rotation about the horizontal axis,
The space S required for 80 ° inversion must be provided above the stocker 2, and the upper wall 16 of the cover 16 that covers the entire device
Needless to say, a must be provided sufficiently higher than the upper surface 2a of the stocker 2 while avoiding the upper space S, and thus the space factor becomes very bad.

Further, in the method of waiting for the completion of the 180 ° reversal of the reversing plate 12 and then starting the movement of the carrier 6 in the arrow Y direction to transfer and supply the cartridge 1 to the players 4 and 5, the stocker 2
It takes a long time to supply the cartridge 1 from the player to the players 4 and 5, and the random access time becomes long.

According to the present invention, when the cartridge selectively pulled out from any storage rack of the stocker is transferred to the player by the carrier, the reversing plate reverses the cartridge 180 ° about the vertical axis to start the movement of the carrier and the reversing plate. The linear interpolation is performed such that the inversion starts at the same time and the carrier movement ends and the inversion plate inversion ends simultaneously.

[Means for solving problems]

The present invention relates to a stocker in which a large number of cartridges in which discs are stored are stored in parallel in a large number of storage shelves, and a player for writing and / or reading information on the discs in each cartridge. A carrier for transferring the cartridge selectively drawn from the stocker and supplying it to the player, a reversing plate for reversing the cartridge transferred by the carrier by 180 ° as necessary, and moving the carrier along the stocker. And a second motor for reversing the reversing plate by 180 °, and if necessary by the reversing plate while the cartridge pulled out from the stocker is transferred to the player by the carrier. In a disk file device configured to flip the cartridge 180 °, The first carrier is driven at a first predetermined speed when a cartridge pulled out from an arbitrary storage rack of the stocker is transferred to the player by the carrier and the cartridge is inverted 180 ° by the reversing plate. Of the first required time required to be transferred between the player and the arbitrary storage rack by being driven by the second motor, and the second motor in which the reversing plate is driven at the second predetermined speed. A comparison circuit that compares the second required time required for driving and rotating 180 °, and the longer required time of the first and second required times based on the comparison output from this comparison circuit. Drive one motor required for the above-mentioned drive at the above-mentioned predetermined speed, while the other motor drives the above-mentioned first motor.
And a speed control circuit which is driven at a speed lower than the predetermined speed so that the second required times substantially coincide with each other.

[Action]

The present invention is based on the time required to move the carrier and
The linear interpolation is performed so that the time required for the inversion is coincident with each other, the movement of the carrier and the inversion of the inversion plate are simultaneously performed, and the movement of the carrier and the inversion of the inversion plate are simultaneously performed.

Then, due to the linear interpolation, the reversing plate is reversed 180 ° substantially only in the carrier moving space.

〔Example〕

An embodiment applied to a disk file device to which the present invention is applied will be described below with reference to FIGS. The same structural parts as those of the prior invention shown in FIGS. 4 to 6 are designated by the same reference numerals, and the description thereof will be omitted.

First, the control circuit of the transfer motor 9 and the reversing motor 14 will be described with reference to FIG.

First, the address signal generating circuit 22 receives an address signal indicating the destination address of the carrier 6 (the position of the designated storage shelf 3) and the address signal of the reversing plate 12 (of the A and B surfaces) by the signal from the supporting means 21 such as a keyboard. The designated signals are generated respectively. These signals are supplied to the carrier movement pulse generation circuit 23 and the reversal plate movement pulse generation circuit 24, respectively. Then, in the carrier movement pulse generation circuit 23, a carrier movement pulse signal (corresponding to the movement distance) necessary for moving the carrier 6 to the destination address based on the current address of the carrier 6 detected by the current carrier position detection means 25. Generated pulse signals). On the other hand, in the reversing plate moving pulse generating circuit 24, only when it is necessary to reverse the reversing plate 12 based on the address (A, B surface) of the reversing plate 12 detected by the reversing plate current position detection means 26, A pulse signal (a number of pulse signals corresponding to 180 ° inversion) is generated, and the pulse signal for inversion is not generated when inversion is unnecessary. It should be noted that the respective current position detecting means 25, 26 detect and store (register) each origin once when the disk file device is powered on, and thereafter perform the counting operation based on the origin to detect the current position of the carrier 6. Recognize whether the address and reversal plate 12 are reversed or not.

Next, the respective pulse signals output from the respective moving pulse generation circuits 26 and 24 are supplied to the carrier drive signal generation circuit 28 and the inversion plate drive signal generation circuit 29, and at the same time, supplied to the pulse comparison circuit 30. It In this pulse comparison circuit 30, the time required for moving the carrier 6 and the reversing plate 12 when the motors 9 and 14 are driven at the maximum speed by comparing the pulse numbers of the carrier moving pulse signal and the reversing pulse signal. It is determined which one of the times required for the reversal is longer, and the determination signal is supplied to the maximum speed drive motor determination circuit 31.

Then, in the highest speed drive motor discriminating circuit 31, one of the carrier 6 and the reversing plate 12 which requires a long time to move or invert based on the discriminating signal is the one motor 9 which should be driven.
Or 14 is determined, and the highest speed command signal for driving one of the motors at the maximum speed is determined by the one drive signal generation circuit 28 or
Supply to 29.

That is, for example, when the time required for moving the carrier 6 is longer than the time required for reversing the reversing plate 12, the maximum speed command signal is supplied to the carrier drive signal generating circuit 28. As a result, the highest speed drive signal (pulse signal whose frequency is set to the highest speed) is supplied from the carrier drive signal generation circuit 28 to the motor drive control circuit 33, and the carrier 6 is moved by the motor 9 at the highest speed.

On the other hand, the respective pulse signals output from the respective moving pulse generation circuits 23, 24 are also supplied to the speed control signal generation circuit 32. Then, the speed control signal generation circuit 32 determines which one of the carrier 6 and the reversing plate 12 takes a short time to move or reverse based on the respective pulse signals and the signal supplied from the highest speed drive motor discrimination circuit 32. A speed control signal for driving the other motor 14 or 9 to be driven at a speed controlled at a time corresponding to the time required for moving or reversing the one motor is supplied to the other drive signal generating circuit 29 or 28.

That is, for example, when the time required to invert the reversal plate 12 is shorter than the time required to move the carrier 6, the speed control signal is supplied to the reversal plate drive signal generation circuit 29. A drive signal controlled by the speed control signal from the reversal plate drive signal generation circuit 29 to the motor drive control circuit 34 (a pulse signal whose frequency matches the frequency of the highest speed drive signal)
Is supplied, and the reversing plate 12 is rotated 180 degrees by the motor 14 at a time corresponding to the time required for the carrier 6 to move.

In each motor drive control circuit 33, 34, each motor 9, 14 is driven by the pulse signal set by each frequency as described above, but the rotation detectors 35, 14 attached to each motor 9, 14, The encode pulse signal from the carrier 36 causes the carrier 6 and the reversing plate 12 to match the actually moved distance and the reversed angle, and
The motors 9 and 14 are driven so as to correct the moving distance to the destination address and the reversal angle.

In summary, in the control circuit of FIG. 1, whichever of the time required for moving the carrier 6 and the time required for reversing the reversing plate 12 when the motors 9 and 14 are driven at the maximum speed is long. It is determined that one of the longer times is moved at the maximum speed, and the other of the shorter times is moved or reversed at a time corresponding to the time required to move or reverse one of the above. It was done.

As a result, linear interpolation is performed such that the movement of the carrier 6 and the reversal of the reversing plate 12 are simultaneously started, and the movement of the carrier 6 and the reversal of the reversing plate 12 are simultaneously ended.

Next, referring to FIGS. 2 and 3, the carrier 6 and the reversal plate are shown.
The movement operation of 14 will be described.

First, regarding the moving distance of the carrier 6, the moving distance between the position A which is the uppermost storage rack 3 of the stocker 2 and the position B which is the lower player 5 is the maximum moving distance l ₁ , and the lowermost step of the stocker 2 The movement distance between the C position which is the storage rack 3 of the above and the D position of the upper player 5 is the minimum movement distance l ₂ .

Then, when the carrier 6 is moved within the maximum moving distance l ₁ , the carrier 6 is moved at the maximum speed, and the reversal plate during this period is moved.
12 is inverted 180 ° at an inversion time (minimum speed) matched with the moving time of the carrier 6. Also, the minimum moving distance l ₂
When the carrier 6 is moved between them, the reversing plate 12 is reversed 180 ° at the maximum speed, during which the carrier 6 is reversed.
It will be moved at the moving time (minimum speed) that matches the reversing time of.

Therefore, for example, when the carrier 6 is moved from the A position to the B position, the reversing plate 12 is moved to 18 as shown by the one-dot chain line in FIG.
The reversal locus Zl of the one end 12a when it is reversed by 0 ° is completely included in the movement distance l ₁ of the carrier 6. That is, since the reversing plate 12 can be reversed by 180 ° only in the vertically moving space of the carrier 6, as shown in FIGS. 4 and 5, the space S necessary for reversing the reversing plate 12 by 180 ° is provided. The upper wall portion 16a of the cover 16 can be provided sufficiently close to the upper surface 2a of the stocker 2 as shown in FIG. 2 and FIG.

Moreover, at this time, the reversing plate 12 can be started to be reversed at the same time when the movement of the carrier 6 from the A position to the B position is started, so that the supply time of the cartridge 1 from the stocker 2 to the players 4 and 5 is extremely shortened. The random access time can be shortened.

Although one embodiment of the present invention has been described above, various modifications can be made based on the technical idea of the present invention.

For example, in the embodiment, a large number of horizontal cartridges are stored in parallel in a vertical direction in a vertically long vertical stocker. Alternatively, the carriers may be stored in parallel with each other in the horizontal direction, and the carriers may be transferred in the horizontal direction along the front surface side of the stocker.

Further, in the embodiment, a plurality of players are arranged on the lower part of the stocker, but a plurality of players may be arranged on the upper part of the stocker, or may be divided into upper and lower parts of the stocker.

Further, the control circuit of the present invention is not limited to the one shown in FIG. 1, and various effective changes can be made.

Further, the present invention is applicable to various disc file devices that can file document information, video information, audio information, or mixed information thereof using a disc,
The present invention can be applied to either a reproduction (read) only device or a recording / reproduction device capable of both recording (writing) and reproduction (reading).

〔The invention's effect〕

According to the present invention, when the cartridge selectively pulled out from any storage rack of the stocker is transferred to the player by the carrier, the cartridge is rotated by the reversing plate.
When it is necessary to invert, the linear interpolation can be performed such that the carrier transfer start and the inversion plate inversion start are performed at the same time, and the carrier transfer end and the inversion plate inversion end are performed at the same time.

Therefore, the reversal plate can be reversed by 180 ° substantially only within the carrier movement space regardless of the carrier transfer distance, effectively preventing the carrier from coming into contact with the cover or the like. And for this,
Since there is no need to provide the space required for 180 ° inversion of the inversion plate on the top of the stocker, the space factor is greatly improved. As a result, it is possible to downsize the entire device and invert it at the same time when the carrier starts moving. The board can be turned over and the random access time can be made very short.

Further, regardless of the movement distance of the carrier, the reversal of the reversing plate is almost surely completed at the end of the carrier transfer, so that the next operation of the disk file device can be smoothly performed.

Further, the control flow for moving the carrier and reversing the reversing plate can be made common regardless of the size of the carrier transfer distance, so that the software for this control can be simplified.

Further, of the first motor for carrier transfer and the second motor for reversing plate reversal, the motor having the shorter time required for driving at the first and second predetermined speeds is lower than the predetermined speed. Since the motor can be driven at a speed, the operation noise of this motor can be suppressed as much as possible.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a motor control circuit diagram, FIG. 2 is a schematic side view of the entire apparatus, and FIG. 3 is a front view of the same. It is a figure. FIGS. 4 to 6 show the invention of the prior application.
The figure is a schematic side view of the entire apparatus, FIG. 5 is a front view of the same, and FIG. 6 is a schematic perspective view of a carrier. In the reference numerals used in the drawings, 1 ... Cartridge 2 ... Stocker 3 ... Storage rack 4,5 ... Player 6 ... Carrier 9,14 ... Motor 12 ... Reversing plate 23 ... Carrier moving pulse Generation circuit 24 …… Reversal plate movement pulse generation circuit 28 …… Carrier drive signal generation circuit 29 …… Reversal plate drive signal generation circuit 30 …… Pulse comparison circuit 31 …… Highest speed drive motor discrimination circuit 32 …… Speed control signal generation Circuits 33, 34 ... Motor drive control circuits.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Taketo Tanaka 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation (56) References JP-A-59-186168 (JP, A) JP-A-SHO 59-117755 (JP, A) JP-A-55-42726 (JP, A)

Claims (1)

[Claims] 1. A stocker in which a large number of cartridges in which discs are stored are stored in parallel in a large number of storage shelves, and a player which writes and / or reads information on the discs in each cartridge. , A carrier for transferring the cartridge selectively drawn from the stocker and supplying it to the player, a reversing plate for reversing the cartridge transferred by the carrier by 180 ° as necessary, and the carrier along the stocker. First to move
Motor and a second motor for reversing the reversing plate by 180 °, and if necessary, the reversing plate can be used to rotate the cartridge 180 out of the stocker while it is transferred to the player by the carrier. In a disc file device configured to be inverted, the carrier pulled out from any storage shelf of the stocker is transferred to the player by the carrier and the carrier is turned 180 ° by the inversion plate. Driven by the first motor driven at a first predetermined speed, the first required time required to transfer between the arbitrary storage rack and the player, and the reversal plate The second requirement required to rotate 180 ° by being driven by the second motor driven at a predetermined speed And a comparison circuit for comparing between the two, and one of the motors that requires the longer one of the first and second required times for the drive based on the comparison output from the comparison circuit. A disk file device provided with a speed control circuit for driving the other motor at a speed lower than the predetermined speed so that the other motor is driven at the predetermined speed so that the first and second required times are substantially coincident with each other. .